/// <inheritdoc/>
protected override IEnumerable <EndPoint> BindInternal(IEnumerable <EndPoint> localEndPoints)
{
HashSet <EndPoint> newLocalEPs = new HashSet <EndPoint>();
lock (BoundHandlers)
{
foreach (EndPoint ep in localEndPoints)
{
LoopbackEndPoint localEP = ep as LoopbackEndPoint;
if (localEP == null || localEP.Port == 0)
{
localEP = null;
for (Int32 i = 10000; i < Int32.MaxValue; i++)
{
LoopbackEndPoint newLocalEP = new LoopbackEndPoint(i);
if (!BoundHandlers.ContainsKey(newLocalEP) && !newLocalEPs.Contains(newLocalEP))
{
localEP = newLocalEP;
break;
}
}
if (localEP == null)
{
throw new IOException("No port available.");
}
}
else if (localEP.Port < 0)
{
throw new IOException("Bind port number must be 0 or above.");
}
else if (BoundHandlers.ContainsKey(localEP))
{
throw new IOException("Address already bound: " + localEP);
}
newLocalEPs.Add(localEP);
}
foreach (LoopbackEndPoint localEP in newLocalEPs)
{
if (BoundHandlers.ContainsKey(localEP))
{
foreach (LoopbackEndPoint ep in newLocalEPs)
{
BoundHandlers.Remove(ep);
}
throw new IOException("Duplicate local address: " + localEP);
}
else
{
BoundHandlers[localEP] = new LoopbackPipe(this, localEP, Handler);
}
}
}
_idleStatusChecker.Start();
return(newLocalEPs);
}
/// <summary>
/// Constructor for server-side session.
/// </summary>
public LoopbackSession(LoopbackSession remoteSession, LoopbackPipe entry)
: base(entry.Acceptor)
{
Config = new DefaultLoopbackSessionConfig();
_lock = remoteSession._lock;
_localEP = remoteSession._remoteEP;
_remoteEP = remoteSession._localEP;
_filterChain = new LoopbackFilterChain(this);
_remoteSession = remoteSession;
_receivedMessageQueue = new ConcurrentQueue <Object>();
}
/// <summary>
/// Constructor for client-side session.
/// </summary>
public LoopbackSession(IoService service, LoopbackEndPoint localEP,
IoHandler handler, LoopbackPipe remoteEntry)
: base(service)
{
Config = new DefaultLoopbackSessionConfig();
_lock = new Byte[0];
_localEP = localEP;
_remoteEP = remoteEntry.Endpoint;
_filterChain = new LoopbackFilterChain(this);
_receivedMessageQueue = new ConcurrentQueue <Object>();
_remoteSession = new LoopbackSession(this, remoteEntry);
}
private static LoopbackEndPoint NextLocalEP()
{
lock (takenLocalEPs)
{
if (nextLocalPort >= 0)
{
nextLocalPort = -1;
}
for (Int32 i = 0; i < Int32.MaxValue; i++)
{
LoopbackEndPoint answer = new LoopbackEndPoint(nextLocalPort--);
if (!takenLocalEPs.Contains(answer))
{
takenLocalEPs.Add(answer);
return(answer);
}
}
}
throw new IOException("Can't assign a Loopback port.");
}
public void TestSessionCreated()
{
Semaphore semaphore = new Semaphore(0, 10);
StringBuilder sb = new StringBuilder();
LoopbackAcceptor acceptor = new LoopbackAcceptor();
LoopbackEndPoint lep = new LoopbackEndPoint(12345);
acceptor.SessionCreated += (s, e) =>
{
// pretend we are doing some time-consuming work. For
// performance reasons, you would never want to do time
// consuming work in sessionCreated.
// However, this increases the likelihood of the timing bug.
Thread.Sleep(1000);
sb.Append("A");
};
acceptor.SessionOpened += (s, e) => sb.Append("B");
acceptor.MessageReceived += (s, e) => sb.Append("C");
acceptor.SessionClosed += (s, e) =>
{
sb.Append("D");
semaphore.Release();
};
acceptor.Bind(lep);
LoopbackConnector connector = new LoopbackConnector();
connector.FilterChain.AddLast("executor", new ExecutorFilter());
IConnectFuture future = connector.Connect(lep);
future.Await();
future.Session.Write(IoBuffer.Wrap(new byte[1])).Await();
future.Session.Close(false).Await();
semaphore.WaitOne(TimeSpan.FromSeconds(1));
acceptor.Unbind(lep);
Assert.AreEqual(1, future.Session.WrittenBytes);
Assert.AreEqual("ABCD", sb.ToString());
}
public LoopbackPipe(LoopbackAcceptor acceptor, LoopbackEndPoint endpoint, IoHandler handler)
{
_acceptor = acceptor;
_endpoint = endpoint;
_handler = handler;
}